Probability ToolKit is the bundle of two add-ins:

  • TreePlan for decision trees, and
  • SimVoi for Monte Carlo simulation.


You can purchase Probability ToolKit risk-free with our 90-day Money-Back Guarantee.

Buy Probability ToolKit

If you are not ready to buy now, you can download the free 30-day Trial version.



By clicking the Trial button below to download a ZIP file of a free 30-day Trial version, you acknowledge that you have read and agree to the terms and conditions of the License Agreement.

Download TreePlan ToolKit Trial

TreePlan ToolKit includes SensIt in addition to TreePlan and SimVoi of the Probability ToolKit.

The file name is TreePlan-ToolKit-659-Trial-Files.ZIP, approximately 2.4 MB.

After downloading, right-click (Windows) or double-click (Macintosh) the ZIP file to extract the
compressed files.

The ZIP file contains the How To Install Add-in PDF file, product guide PDF file, example workbook XLSX file, and Trial add-in XLAM file.

To view an example workbook XLSX file, launch Excel, and open the XLSX file.

Installation of the add-in XLAM file in Excel is simple but is not automated.

Refer to the How To Install Add-in PDF file for detailed installation instructions.

Instead of installing a Trial add-in XLAM file, you can launch Excel, and use Excel’s File Open command to open the XLAM file.

The Trial add-in is fully-functional for 30 days or more and has watermarked dialog boxes and printouts.

TreePlan Software grants a license to prospective purchasers to use the Trial version of an add-in for a 30-day evaluation period.

If you want to continue using the software after 30 days, you must purchase a Pro or Student license.

Buy Probability ToolKit

Instructors who require their students to use the software must obtain Student licenses, either by having students use a textbook that has licenses or by purchasing licenses from TreePlan Software.

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